National Museum of Nuclear Science & History
Seymour Calvert served for 11 months in the Special Engineering Detachment at Los Alamos. He specialized as a chemical engineer, and carried out experiments with beryllium that were often dangerous.
Duillio DiCostanzo worked at the shop in the University of Chicago’s Metallurgical Laboratory (“Met Lab”) during the Manhattan Project.
Baldwin worked for Stone and Webster Engineering Corporation.
Hayes worked in the United States Engineer District Office.
